.... Hubei Han Technology Co., Ltd. (4404 Factory) is a former state-run factories Hon photovoltaic (4404 state-owned factory) from the overall restructuring. Chinese state-owned photovoltaic plant is the fourth of the original China Machine Industry (now the Ministry of Information Industry) in 1969 to invest in the construction of the third-line business. Completed and put into production in 1973. Nanzhang original site in Hubei province Hua Town. Third-line construction by the State Council, the adjustment and reform the Office of Planning and approved by the Ministry of Electronics Industry, in 1991 as a whole to move to Xiaogan City of Hubei Province.

     Enterprises put into operation early stage of the production of major military electronics. Later, around the power core of the vacuum technology, research and development of a number of categories of civil defense products.